(19)
(11) EP 2 056 337 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.02.2011 Bulletin 2011/07

(43) Date of publication A2:
06.05.2009 Bulletin 2009/19

(21) Application number: 08018740.4

(22) Date of filing: 27.10.2008
(51) International Patent Classification (IPC): 
H01K 1/28(2006.01)
H01K 7/00(2006.01)
 H01K 1/00(2006.01)
H01K 1/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 30.10.2007 JP 2007282126

(71) Applicant: Yokogawa Electric Corporation
Tokyo 180-8750 (JP)

(72) Inventors:
  • Watanabe, Tetsuya
    Musashino-shi Tokyo 180-8750 (JP)
  • Hara, Hitoshi
    Musashino-shi Tokyo 180-8750 (JP)
  • Kishi, Naoki
    Musashino-shi Tokyo 180-8750 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Infrared light source


(57) An infrared light source has a filament (3) fabricated on a first substrate (1) in the shape of a microbridge and energizes the filament (3) so as to generate heat, thereby causing the filament (3) to emit infrared radiation. The infrared light source has a second substrate (2) that is bonded to the first substrate (1) and seals the filament (3), and feedthrough electrodes (9,10) that lead electrodes of the filament to the outside of the first substrate. Thereby, the function of the package is imparted to the device itself, to thus realize a highly-reliable device at low cost.










Search report